I have an image that ran successfully through QUAC and when I try to run a SAM classification I get a "Zero Array" error message. I'm using ENVI 5.6.2 looking at Planet Scope data. I run a simple band statistics and get the following:

Dims: Full Scene (30,223,820 Points)

Basic Stats Min Max Mean StdDev
Band 1 1 12885 328.570124 270.797651
Band 2 1 11342 333.476376 334.043302
Band 3 1 11260 500.696536 372.898197
Band 4 1 11467 585.325001 403.536483
Band 5 1 14718 563.031181 446.156745
Band 6 1 13842 496.661480 488.603188
Band 7 1 17270 1198.019299 586.159480
Band 8 1 13301 2480.427232 1252.710369

There are no zero values. Then I run al full band statistics and get the following:

Dims: Full Scene (30,223,820 points)

Basic Stats Min Max Mean Stdev Num Eigenvalue
Band 1 0 12885 328.5211 270.7906 1 2100365.0463
Band 2 0 11342 333.4159 334.0329 2 683809.8925
Band 3 0 11260 500.5996 372.9165 3 42464.7513
Band 4 0 11467 585.2082 403.5716 4 6612.7311
Band 5 0 14718 562.9266 446.1655 5 2702.7361
Band 6 0 13842 496.5695 488.5905 6 1207.4291
Band 7 0 17270 1197.8048 586.2794 7 761.5955
Band 8 0 13301 2479.9441 1253.0105 8 461.4861

With the same dimensions and the same number of points and now I have a minimum of 0.

Why the difference and is this the source of the error?

Thanks,
Karen Kowalewsky